I would like to use MapPoint to chart soil types to a great level of detail. I am an estimator for an underground utility company and would love to be able to show whether an area is dirt, rock, or shale. I don't mind drawing the areas in MapPoint but I'm a beginner at this and haven't discovered the best way to go about this. It is common to have multiple soil conditions in as little as 500 square meter area. It would be a great help to track this for all the underground excavation that we do. Any help is appreciated.